This is a website dedicated to many free resources that are available to help primary practitioners (with some paid sites that are created by some great individuals).
You will find websites, videos and twitter accounts to help you with your teaching.
I didn't really participate with twitter for a long time, but I had a moment when I realised it could connect me with people all with different expertise that could support my teaching. This is just a small list of people that I follow who share their ideas with the greater community (this list will grow over time).
(@nicsermon - That's my account)